1143211433 has 32 divisors (see below), whose sum is σ = 1432214784. Its totient is φ = 888486912.

The previous prime is 1143211417. The next prime is 1143211439. The reversal of 1143211433 is 3341123411.

It is not a de Polignac number, because 1143211433 - 2⁴ = 1143211417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143211399 and 1143211408.

It is not an unprimeable number, because it can be changed into a prime (1143211439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1333541 + ... + 1334397.

It is an arithmetic number, because the mean of its divisors is an integer number (44756712).

Almost surely, 2^1143211433 is an apocalyptic number.

1143211433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1143211433 is a deficient number, since it is larger than the sum of its proper divisors (289003351).

1143211433 is a wasteful number, since it uses less digits than its factorization.

1143211433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its digits is 864, while the sum is 23.

The square root of 1143211433 is about 33811.4098049756. The cubic root of 1143211433 is about 1045.6239439825.

Adding to 1143211433 its reverse (3341123411), we get a palindrome (4484334844).

The spelling of 1143211433 in words is "one billion, one hundred forty-three million, two hundred eleven thousand, four hundred thirty-three".